//
//  NSDictionary+XUtilExtension.h
//  XUtils
//
//  Created by Hongwei Wang on 2018/8/6.
//  Copyright © 2018年 Hongwei Wang. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSDictionary (XUtilExtension)
- (id)null_objectForKey:(id)aKey;

- (NSString *)toJsonString;
-(NSData *)toJSONData;
@end
